Composite check ring for horizontal spray quenching machine tool

The utility model discloses a composite check ring for a horizontal spray quenching machine tool, which comprises a check ring base body, wherein the check ring base body is of a ring-shaped structure, and one end face of the check ring base body is of a step-shaped structure with a large outer side wall thickness and a small inner side wall thickness; a combined flange arranged in a circular ring shape is detachably installed on the end face with the large thickness of the check ring base body, and a plurality of threaded holes are evenly distributed in the end face with the small thickness of the check ring base body. The outer diameter of the check ring base body is equal to that of the combined flange, the inner diameter of the end face, with the large thickness, of the check ring base body is larger than that of the combined flange and larger than that of the end face, with the small thickness, of the check ring base body, and a plurality of stepped threaded through holes with the large bottom diameter a